[3,5] [5,7] [7,9] [11,13] Which among the following are not twin prime numbers.

Question

[3,5] [5,7] [7,9] [11,13] Which among the following are not twin prime numbers.

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Ruby 1 month 2021-08-19T06:33:55+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-08-19T06:35:15+00:00

    Answer:

    (7,9) are not twin primes because 9 is not a prime number.

    0
    2021-08-19T06:35:27+00:00

    Answer:

    ⇒ (7,9) are not twin prime

    Step-by-step explanation:

    Definition Two prime numbers which differ by 2 is known as twin primes. Among the given pairs,

    1. (3,5) – Both 3 and 5 are prime numbers and they differ by 2. Hence they are twin prime.

    2. (5,7) – Both 5 and 7 are prime numbers and they differ by 2. Hence they are twin prime.

    3. (7,9) – This pair contains a composite number i.e 9. Hence they are not twin prime.

    4. (11, 13) – Both 11 and 13 are prime numbers and they differ by 2. Hence they are twin prime.

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